AirHint found the following cheapest one-way flights from San Francisco (SFO) to Lisbon (LIS) in December 2025 (see full year).
One-Way flights
| 02 Dec | Flair Airlines | ||
| 03 Dec | Frontier Airlines | ||
| 09 Dec | WestJet | ||
| 05 Dec | WestJet | ||
| 04 Dec | WestJet | ||
| 08 Dec | Hawaiian Airlines | ||
| 06 Dec | Flair Airlines | ||
| 10 Dec | Alaska Airlines | ||
| 07 Dec | WestJet | ||
| 29 Dec | Lufthansa |
Also check the deals for return flights from San Francisco to Lisbon in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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